DBC.DiskSpace[X] This view gives AMP vproc information about disk space usage for any database or account. It gets this information from the ALL table.
DBC.TableSize[X] This view gives AMP vproc information about disk space usage (excluding spool) for any table or account.
DBC.AllSpace[X] This view gives AMP vproc information about disk space usage (including spool) for any database, table, or account. It also include table ALL leading to confusion.
